Water-gage glass.



W. A. HARDWICK &J. T. BRADLEY.

WATER GAGE GLASS.

APPLICATION men SEPT. 11. I915.

Patented Jan. 2, i917.

v.1, by

Witnesses a. *KTELZJWICK AND JAMES T. BRADLEY, 91E MEMPHIS, TENNESSEE.

,WATER-GAGE GLASS.

- 61w" Larisa.

113' plieation filed September 17, 1915.

To aZZ ct /tom it may concern Be it known that we, WILLIAM A. HARD- WICKand Janus T. ERADLEY, citizens of the United States, residing atMemphis, in the county of Shelby, State of Tennessee, have invented anew and useful ater-Gage Glass, of which the following is aspecification.

The device forming the subject matter of this application is a watergage, and one object of the invention is to provide a device of thistype in which ordinary glass water tubes may be dispensed with.

Another object of the invention is to improve the construction of thetransparent element by strengthening the same and by so constructing itthat the water level may be readily visible.

Another object of the invention is to provide a structure of the sortabove mentioned which may be adjusted circumferentially, withoutbreaking the continuity of the water conduit.

. It is within the province of the disclosure to improve generally andto enhance the utility of devices of that type to which the presentinvention appertains.

With the above and other objects in view wnich will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescrlbed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made Within thescope of what is claimed, without departing from the spirit of theinvention.

in the accompanying drawing :F igure .1 shows one form oi the inventionin elevation, assembled with the water column of a boiler; Fig. :2 showsin longitudinal section the glass structure forming the subject matterof this invention as delineated in Fig. 1; Fig. 3 is a cross sectiontaken on the line 3 3 of Fig. 2.

In carrying out the present invention ,there is provided a body 1preferably made of metal and equipped at its ends with openings 2.Within the contour of the body 1 there is formed a longitudinal channel8. The channel 3 serves to define, in the body 1, end walls at in whichthe openings 2 are located. The side walls of the channel 3 converge asthey extend rearwardly, as indicated at ii in Fig. 3, the base or backof the channel being rounded as shown at 6. v

Specification of Letters Patent.

Fatentetl Jan. 2, 191?.-

seriai no. 51,225.

The rounded back or base 6 of the channel 3' is alined with theperimeters of the openings 2 throughout a portion of the circumferenceof the openings, .so that there is a straight and direct conduit throughthe body, from one end thereof to the other. The body 1 is provided witha depressed seat 7 in which is located a gasket 8. Disposed within theseat 7 and resting against the gasket 8 is a transparent member 9 whichmay be fashioned from glass. The outer faces 10 of the transparentmember 9 diverge as they extend rearwardly, the side walls of thetransparent'member being disposed in parallelism and the rear wall 12 ofthe transparent member being disposed at right angles to the side walls11. The rear wall 12 of the transparent member 9 is provided with aplurality of longitudinally extended corrugations 14. Owing to the factthat the rear wall 12 of the transparent member 9 is supplied withthe-longitudinal corrugations 14:, and owing to the fact that the walls10 of the transparent member diverge as they extend rearwardly the Waterlevel may be ascertained readily at a glance,

, irrespective of the position of the observer and irrespective of arotation which, as hereinafter described, may be imparted to the body 1for the purpose of adjustment.

Abutting against the rearwardly diverging faces 10 of the transparentmember 9 is a gasket 15 and superposed upon the gasket 15' is a cap 16having an opening 17 through which the transparent member 9 protrudes,and including end strips 18 which, coiiperatin g with the ends of thetransparent member 9 prevent the same from moving endwise. The inneredges of the cap 16 are beveled as indicated at 19 to assume approximateparallelism with the adjacent walls 10 of the transparent member 9, thebeveled faces 19 of the cap lying against the gasket 15. Securingelements of any desired sort, preferably machine screws, indicated bythe reference character 20, unite the cap 16 to the body 1.

Threaded or otherwise secured in the openings 2 of the body 1 arenipples 21, coacting, as shown in Fig. 2, with the necks 22 of valvecasings 23 carrying valves 24:. Nuts 25 are threaded onto the necks 22and areprovided with inwardly extended flanges 2-6. interposed betweenthe flanges 26 and the necks :22 of the valve casings 23 are packingwhiskers The valve casings 23 are connected with tubes 28 which, intheir turn open into the boiler water column 29, proi'ided with theusual openings 30 adapted to receive gage cocks (not shown).

It is to be observed that, at any time, the nuts may be loosened,permitting a circumferential adjustment of the body 1 and i thetransparent member carried thereby, the

In a device of the class described, a body As hereinbefore stated, the

having inlet and outlet openings communieating with the channel; atransparent member including a flat rear face cooperating with theshoulder, side faces cooperating with the marginal flange and disposedat right angles to the rear face, and front faces which converge to forman edge; a frame surrounding the transparent member and includingbeveled faces coacting with the" front faces independently of the sidefaces; and means for securing the frame to the flange.

In testimony that we claim the foregoir r as our own, we have heretoailixed our sig natures in the presence of two witnesses.

lVILLlAh l A. HA1 iDlVICK. JAMES T. BRADLEY. Witnesses L. R. DILL'ARD,J. H. MARTINS.

(Eopies of this patent may he obtained for iiv'e cents each, byaddressing the Commissioner of Patents, Washington, D. 0." 1

